update crashed site

hi i updated your plugin this morning and it crashed my site .
An error of type E_ERROR was caused in line 137 of the file /home/customer/www/*****************/public_html/wp-content/plugins/widget-google-reviews/grw-setting.php. Error message: Uncaught TypeError: vsprintf(): Argument #2 ($values) must be of type array, string given in /home/customer/www/***************/public_html/wp-content/plugins/widget-google-reviews/grw-setting.php:137.
whilst activated it has changed the container size of the page as well.